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Development of structured illumination microscope using transmission diffraction grating obtained by analogue microfilming method
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  • Aleksa Denčevski,
  • Jovana Z. Jelić,
  • Ana Senkić,
  • Aleksandar Krmpot,
  • Mihailo D. Rabasović
Aleksa Denčevski
Univerzitet u Beogradu Institut za Fiziku

Corresponding Author:dencevski@ipb.ac.rs

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Jovana Z. Jelić
Univerzitet u Beogradu Institut za Fiziku
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Ana Senkić
Institute of Physics Zagreb
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Aleksandar Krmpot
Univerzitet u Beogradu Institut za Fiziku
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Mihailo D. Rabasović
Univerzitet u Beogradu Institut za Fiziku
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Abstract

We present the development of a custom-built structured illumination microscope (SIM) featuring a specially designed transmission diffraction grating. Employing the analogue microfilming method, we fabricated transmission diffraction gratings suited to the specific requirements of our system. This robust and cost-effective method allows for the fabrication of diffraction gratings with customised constants, ensuring excellent transmission in both the visible and near-infrared spectra. Additionally, to assess the performance of our system, we measured the resolution in both epifluorescent and superresolution imaging modalities by applying two independent methods: the conventional resolution measurement using fluorescent beads and the knife-edge technique applied on the MoS 2 monolayer flakes. Both methods confirmed enhancement in the resolution of SIM over the epifluorescent imaging modality. Furthermore, we have successfully demonstrated the capabilities of our microscope by imaging fluorescently labelled astrocytes, specifically targeting the vimentin filament protein within these cells. The superresolution images reveal fine structures of the vimentin cytoskeleton that remain unresolved in the epifluorescent image.
11 Apr 2024Assigned to Editor
11 Apr 2024Submission Checks Completed
13 Jun 20241st Revision Received
14 Jun 2024Assigned to Editor
14 Jun 2024Submission Checks Completed
14 Jun 2024Review(s) Completed, Editorial Evaluation Pending
14 Jul 2024Reviewer(s) Assigned